The CEO of a large financial institution claims that, on average, their clients invest more than R150 000 per year in a particular portfolio. Test this claim at the 10% significance level if it was found that a sample of 25 clients invested an average of R145 000 in the portfolio over the last year, with a standard deviation of R15 000.

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A: We have to find value of test statistics.

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A: Use the Two sample Independent t test  Followings are the Steps to perform the two sample t test…

Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

A:

Q: Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported…

A: Answers are in images uploaded below and calculation of p value is explained in last step. Thanks!

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A:

Q: A random sample of 300 physicians shows that there are 50 of them who make at least $200,000 a year.…

A: Given,n=300x=50p^=xn=50300=0.1667H0:P=0.20H1:P<0.20

Q: Is there any inconsistency in the statement" The mean of a binomial distribution is 10 and the…

A: In case of binomial distribution Mean=np Variance=npq Also Mean>variance

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A:

Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

A: The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter the…

Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

A: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

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A:

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A: a) The level of significance is 0.05.

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Q: Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test.…

A: Given information Hypothesis: H0­ : p = 0.111 H1 : p <  0.111 After testing null hypothesis is…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.